Senior Technical Lead
India
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Job Description
Senior Technical Lead
Bangalore, Karnataka

Job Summary

Develop and validate the 5G Network Repository Function (NRF) and its Service-Based Architecture (SBA) interfaces. The role covers feature implementation, API/protocol validation, cloud-native deployment, automation, troubleshooting, and release-quality verification.

Key Responsibilities

Analyze 3GPP-based requirements related to NRF.Design and validate:
  • NF Registration
  • NF Discovery
  • Status Management
  • Subscription & Notification services
  • NF lifecycle management
Develop/enhance NRF components, APIs, resiliency, observability, and data handling.Create and execute:
  • Functional testing
  • Integration testing
  • Interoperability testing
  • Resiliency testing
  • Regression testing
Automate API and end-to-end validation.Deploy and troubleshoot NRF in Kubernetes/OpenShift environments.Analyze logs, protocol traces, metrics, and defects.Work with dependent NFs such as:
  • AMF
  • SMF
  • PCF
  • UDM
  • AUSF
  • SCP
Support release readiness, performance analysis, and field issue reproduction.

Skill Requirements

Mandatory Skills

  • Strong understanding of:
    • 5G Core SBA architecture
    • NRF concepts and workflows
  • REST APIs, JSON, HTTP/2, TLS
  • API testing and distributed-system troubleshooting
  • Programming/Automation in one or more:
    • Go
    • Java
    • Python
    • C++
  • Linux
  • Docker/Containers
  • Kubernetes
  • CI/CD pipelines
  • Test design, defect analysis, and debugging

Preferred Skills

  • 3GPP specifications (TS 23.501, TS 23.502, TS 29.510)
  • Other 5G Core NFs:
    • AMF
    • SMF
    • UDM/UDR
    • PCF
    • AUSF
    • SCP
  • Helm
  • Service Mesh
  • Prometheus/Grafana
  • Performance testing
  • Cloud-native telecom deployments
  • High-availability design

Tools/Platforms

  • Kubernetes / OpenShift
  • Docker
  • Helm
  • Git
  • Jenkins / GitLab CI
  • Postman / REST clients
  • Wireshark
  • Prometheus
  • Grafana
  • Linux

Typical Nokia Interview Focus Areas

  1. 5G Core architecture and SBA
  2. NRF registration and discovery procedures
  3. HTTP/2 and REST APIs
  4. Kubernetes troubleshooting
  5. NRF–AMF–SMF interaction flows
  6. API automation using Python/Go
  7. Log analysis and defect debugging
  8. 3GPP protocol knowledge
  9. Microservices architecture
  10. Cloud-native telecom deployment concepts

Other Requirements
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Information at a Glance

Why HCLTech?

At HCLTech, you'll supercharge your potential. You'll find your career. And you'll find your spark. All at a place that knows that helping its customers stay on top starts by putting its people first.

HCLTech is a global technology company, home to more than 223,000 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud and AI, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of 12 months ending June 2026 totaled $14.8 billion.